I've recently planted a Buddleia davidii in my garden, and I'm looking for some tips on how to best care for it to ensure it thrives. I've read that they can attract butterflies, which I'm really excited about. What are the best practices for watering, pruning, and dealing with potential pests or diseases with this plant? Also, is there a particular time of year that's best for pruning, and how much should be cut back to encourage healthy growth and flowering? Any advice from fellow gardeners with experience growing Buddleia would be greatly appreciated!